1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this artist was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53cedc5579b9a458e74532fc4a00b1f1f681b38cbaec8c2813bf937a5f1199e7. Chain 2 (Bitcoin): anchored in block 953612 (2026-06-14T08:22:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/16668cc6-b3a4-4c45-af7b-d16076e77cb8.json and https://artists.proofprofile.net/proofs/artist/16668cc6-b3a4-4c45-af7b-d16076e77cb8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).